Chapter 23 Electric Potential Ranking Task 4 of 10 Constants Part A Rank the loc

Question

Chapter 23

Electric Potential Ranking Task

4 of 10

Constants

Part A

Rank the locations A to F on the basis of the electric potential at each point. Rank positive electric potentials as higher than negative electric potentials.

Rank the locations from highest to lowest potential. To rank items as equivalent, overlap them.

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A

B

C

D

E

F

lowest

highest

The correct ranking cannot be determined.

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A

B

C

D

E

F

lowest

highest

The correct ranking cannot be determined.

Explanation / Answer

let each line on gragh = 1 unit

Electric potential V = KQ/r

at A, Vnet = Kq/4 - Kq6 = Kq/12 = 0.0833 Kq

at B, Vnet = Kq/1 - Kq/5 = 4/5 Kq 0.8 K

At C, Vnet = kq/(sqrt(2^2 + 3^2) - Kq/sqrt(2^2 + 3^2) = 0

at D, Vnet = kq/(sqrt(2^2 + 3^2) - Kq/sqrt(2^2 + 3^2) = 0

at E, Vnet = -Kq/3 + Kq/5 = -2/15 Kq = -0.1333 Kq

at F, Vnet = -Kq/4 + kq/6 = -0.0833 Kq

so the order is

A > B> C = D > E > F

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